Why do I have to eject the NEX from my Mac?
With any other camera, when I plug it into my Mac, it just pops up in iPhoto. When done, I unplug it with no issues.
With the NEX, when I plug it into my Mac, it pops up in iPhoto but also mounts as a drive on the desktop. I need to actually eject it before unplugging, or I get an error. I have had this issue with all 3 NEX models I've tried, but never with any other Nikon or Canon camera.
I've never connected my NEX directly to my mac, but I suspect it has to do with the USB connection mode (found under the setup menu). If it's set to mass storage, OS X will treat the camera as a card reader and mount the SD card as a drive. If you don't eject the camera/card properly you'll not only get the error message, but you risk damaging the SD card.
AFAIK, that's just the way Macs handle external drives. That's how your camera is mounted, and if you had a deferred write pending you could get your card scrambled. Some software, like Lightroom, can eject the camera automatically after importing the photos. Otherwise, it's your responsibility.
Ok, changing the USB mode to MTP from Auto (which seemed to auto choose Mass Storage) fixed the problem. I thought I tried that on my NEX 3 and it didn't work, but worked on my 5N.
I have to eject my Lumix P&S as well as the NEX.
The basic reason is that the Mac does "write caching" - that is, it doesn't write to a disk when you tell it to, but later at its own convenience. While it should not be writing to the camera at all, it wants to add icon files to every image.
Under Windows, only the built in hard drives have write caching. USB drives normally do not, although you can change this setting, if you want trouble.
Write caching is a bad thing as it can lead to loss of data if power goes off suddenly. It is supposed to speed things up, but would be better not used.
Its how MAC address external drives. Don't just unplug the camera, always 'eject' it to prevent damage.
I really hate iPhoto, so i do not use it.
But i love the fact the the NEXes mount as a drive. very easy to get the files.
Much more control, and you can connected it to every thing, from computers to TVs, to tablets.
I hate the iPhone type USB connections where you do not get a mounted drive...
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